Voltage to frequency
converters (also called wide-range voltage-controlled
oscillator) may be a component or electronic circuit which
converts an input voltage to a linear or nonlinear frequency
output. Voltage to frequency converter circuit
typically consist of an analog voltage amplifier, a
oscillator circuit, required resistors and capacitors,
and a driving power supply. Voltage
to frequency converters are available as a integrated circuit
as well. Integrated circuits, combine all if the relevant
electronic systems into a compact package which maybe easily
mounted on a pc board.
Typical specifications
for voltage to frequency converters include the following:
Required number of
analog channels
Required number of
differential channels.
Differential
channels
Maximum input and
output voltage
Bandwidth capability
Signal isolation
Accuracy (percent of
range)
Operating
temperature
Operating bandwidth
( normally stated in dB )
Voltage to Frequency
applications include an automotive or engine tachometer,
where a frequency is converted from a alternating current.
Other applications include telephone communications, where a
direct current is not practical and the voltage to frequency
converter is used to transmit current to frequency over the
long distance telephone line.
